John Gully appeared in Coronation Street in four separate roles:
- A Hospital Clerk in Leeds in June 1998 when Samantha Failsworth duped Natalie Horrocks into thinking her son Tony had been admitted there after a car crash.
- DS Palmer who investigated the kidnapping the Bethany Platt in January 2004 and Steve McDonald's supposed abduction of Amy Barlow in July 2005.
- An unnamed Police Officer who stopped Rob Donovan for a suspected traffic violation in September 2014.
- A doctor who treated Nicola Rubinstein when she developed complications with her pregnancy in February 2018.
He has also appeared in The Bill, Fat Friends, Strictly Confidential , Heartbeat, Doctors, Emmerdale and Happy Valley. Stage roles include parts in King Lear and War of the Roses.
Outside of acting roles, John is a presenter on HFM Radio.